Locking link for chain couplings for logs



Dec. 21, 1926. 1,611,597

E. LARSSON LOCKING LINK FOR CHAIN COUPLINGS FOR LOGS Filed Mayan, 1926 Patented Dec. 21, 1926.

PATENT OFFICE.

EDWARD LARSSON, OF STOCKHOLIVI, SWEDEN.

LOCKING LINK FOR CHAIN COUPLINGS FOR LOGS.

Application filed May 19, 1926, Serial No. 110,149, and in Sweden June 2, 1925.

The present invention relates to a locking link For chain couplings For logs and has for its purpose to provide a locking link by which not only a chain laid in well known manner as a loop around a log but also a link oi. another chain serving to connect the said log to another log can be locked in a simple and quite reliable manner.

The invention consists in the special construction of the locking link more particularly described herebelow and pointed out in the clain'i.

1n the accompanying drawing I have shown one embodiment of my invention.

1 shows diagrainmatically a side VlW of two logs connected to each other by a chain.

Fig. 2 shows a slightly modified locking link and two chain links therein shown in section.

Fig. 3 shows an end View of the left hand log of Fig. l with the chain thereon, and

Fig. l shows a top View of the right hand log. of Fig. 1 with its chain.

lieierring to the drawing, 1 and 2 indicate two logs while 3 and 1 indicate two chains laid as loops around the logs. The loop of the chain 4 is locked by means of a usual locking link and may be tightened by any suitable means, for instance a wedge 10 in serted in two adjacent elongated links 12 oil: the chain. -1- atter the same have been pushed together longitudinally as is clearly shown in the drawing. The said wedge 10 may be secured in petition by means of a bolt or a U-shaped spring l+l (compare Fig. 3) inserted in one of the holes 15 provided in the wedge 10. To the one of the said elongated links 12 is pivotally secured a plate 16 having edges 17 adapted to be forced into the log in order to prevent the loop of the chain from sliding on the log in the longitudinal direction thereof. Ehe free end of the chain t is carried over to the log 1 and locked in a locking link (3 constructed in accordance with the present invention. This link has as usual an aperture 7 through which the chains 3 and 4 used can be pulled and with a locking slot 8 communicating with said aperture 7. Extending from the end of said slot 8 farthest from the said aperture '7 is a slot 9 which forms an angle with the slot 8 and is adapted to receive a link of the c in H It;

The two logs 1 and 2 are coupled together in the following manner. At first the chain 4 is placed as a loop around the log :2 and after the said loop has been locked bv insert ing one of the links 01 the chain in the lo ing slot 5 of the locking linl 5 the loop is tightened around the log by means of the wedge 10. Then the free end or" the chain t is carried over to the log 1 where it inserted through the aperture T of the locking link 6 of the chain 3. A link of the chain l is thereupon pushed edgewise through the slot 8 into the slot 9 whereupon the chain 3 is laid. as a loop around the log 1 and locked by pushing a link thereof into the slot 8 ot the locking link 6. The said loop is thereupon tightened by means of any suitable device such as the wedge 11 inserted through two adjacent elongated links 13 ot the chain 3.

The slot 9 of the locking link 6 may be of somewhat smaller length than the width of a 1' 1k ot' the chain 4 as is shown in Fig. 1 or of approximately the same length as said width as is shown in Fig. 2. In both cases the link of the chain 3 engagin the slot 8 will prei-"entin a quite reliable manner the link of the chain engaging the slot 9 from leaving the latter as long as the loop of the chain 3 remains tightened around the log 1.

For preventing the loop of the chin :5 from sliding on the log 1 in the longitudinal direction thereof the san'ie device as that described with reference to the chain -l n'ia be used, riz a plate 1% having edges 11'' adapt ed to be forced into the log 1.

Haring now described my invention what I claim is:

A. loop chain for logs, haiinn ing link provided with an ap ture for the free passage of the chain. therctlu'ougln and an L-shaped slot communicating at one end with the aperture and forming an extension thereof, the lower closed end portion of said slot being adapted to hold a link of a connecting chain, and the upper connnuniening portion being adapted to hold link of the loop chain, whereby a loop chain link maintains a link of the connecting chain in position. I

In testimony whereof I have hereunto subscribed my name.

EDWARD LARSSON.

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